Summary of Significant Accounting Policies (Details Textual) (USD $)	0 Months Ended	1 Months Ended	12 Months Ended
	Oct. 02, 2012	Nov. 21, 2013	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]
Four-for-three stock split			The stock split increased the Companys issued and outstanding shares of common stock from 3,659,753 shares of Class A Common Stock and 597,504 shares of Class B Common Stock to 4,879,186 and 796,672 shares, respectively.
Number of stock options outstanding having antidilutive effect			13,000	93,000	304,000
Concentration Risk, Market Risk			44.00%	44.00%	43.00%
Depreciation expense			$ 6,716,000	$ 6,805,000	$ 7,053,000
Interest expense related to the amortization of debt issuance costs			204,000	231,000	642,000
Write-off of debt issuance costs			55,000	0	1,326,000
Net book value of deferred costs			823,000	793,000
Number of shares authorized to be repurchased			60,000,000
Treasury Stock, Shares, Acquired			2,179	2,924	5,380
Treasury Stock Acquired, Average Cost Per Share			$ 43.98	$ 27.30	$ 21.71
Advertising and promotion costs			3,225,000	3,182,000	3,675,000
Special cash dividend declared on Classes A and B Common Stock	$ 1.24	$ 1.80	$ 1.80	$ 1.24	$ 0
Dividend paid	7,000,000	10,300,000
Number of broadcast licenses			98
Number of market serving			25
Revolving Credit Facility [Member]
Summary Of Significant Accounting Policies [Line Items]
Write-off of debt issuance costs			55,000
Common Class [Member]
Summary Of Significant Accounting Policies [Line Items]
Stock repurchase program, remaining authorization amount			29,900,000
Minimum [Member] | Common Class [Member]
Summary Of Significant Accounting Policies [Line Items]
Share repurchase program, authorized amount			60,000,000
Maximum [Member] | Common Class [Member]
Summary Of Significant Accounting Policies [Line Items]
Share repurchase program, authorized amount			$ 75,800,000
Favorable Lease Agreements [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortized over the lives of the leases term range			4 years
Favorable Lease Agreements [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortized over the lives of the leases term range			26 years
Other Intangible Assets [Member] | Minimum [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortized over the lives of the leases term range			1 year
Other Intangible Assets [Member] | Maximum [Member]
Summary Of Significant Accounting Policies [Line Items]
Amortized over the lives of the leases term range			11 years